Mailing envelope



March 11 1924. 'i

. P. F. MILNARlsT 1,486154 MAILING ENVELOPE Filed Aug. '7, 1922 -O-j-es VE CIF-k. Pau/.F Mffnarfs.

Patented Mar. 11, 1924.

UNITED STATES PAUL F. MILNARIST, 0F JULIET, ILLINOIS. i l

MAiLING nnvnnorn.

Applcatonled August 7, 1922. lSerial No. 586,275.

To all 'whom t may concern.'

Be it known that I, PAUL F. MILNARIST, a citizen of the United States, and a resident of the city of Joliet, in the county of Will and State of Illinois, have invented certain new and useful Improvements in a Mailing Envelope; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numerals of reference marked thereon, which form a part of this specification.

This invention relates to mailing envelopes.

It is primarily an object of this invention to improve mailing boards or envelopes in such a manner that they will not readily f iiex or crease and will withstand the wear and tear that usually occurs at the lateral margins and damages the matter enclosed thereby.

With these and other objects in view which will become more apparent in the following description and disclosures in the drawing, this invention comprises the novel structure and combinations hereinafter described and more particularly pointed out and dened in the appended claims.

In the accompanying drawings which il-v lustrate a preferred embodiment of this invention and in which similar reference nu: merals refer to similar features in the different views:

Figure 1 is a plan view of a mailing envelope.

Figure 2 is an enlarged section taken on the line 2-2 of Figure 1.

Figure 3 is an enlarged fragmentary section upon the line 3-3 of Figure 1.

Figure 4 is a plan view of a modified form of the invention.

Figure 5 is an enlarged fragmentary section upon the line 5 5 of Figure 4.

Figure 6 is a section upon the line 6-6 of Figure 4.

In Figures l to 3 of the drawing is illustrated an envelope having one wall formed of corrugated card board 1 or the like, hav ing the upper and lower margins, which extend transversely to the corrugations, enclosed in sheet metal folds or clamps 2, each of which is provided with small tongues or tangs upon both ysides which slightly pierce the said board when the sides of the fold are pressed together, the tangs on one side of the fold being staggered with relation to those on the other side thereof in order to prevent weakening the cardl board.` While sheet metal folds have been illustrated it is to be understoodthat other material of a sufficiently inflexible nature is Y within the scope of this invention.

These sheet metal folds prevent creasing or buckling of the card board upon lines corresponding to the corrugations and at the same time protect the margins from being crimped or damaged.

A paper folder 3 is pasted along the lower margin of the said board as indicated at 3 and folded over the opposite face of the said board and over the top edge or margin in the form of a securing flap 3". The lateral margins of the paper folder are usually folded inwardly upon themselves for protecting the lateral edges of the contained matter. v

In Figures 4 to 6 is illustrated an envelope comprising an integral structure which may be variously constructed. In the present instance, it is shown as consisting of a front face or portion 4, a rear face or portion 5 formed by the folds 5a and 5b which are pasted together. The front face or portion is provided with the flaps 6 and 7 which are folded over the rear face, one being glued to the back face while the other may form the opening and closing flap for the envelope, which is adapted to be glued or secured when the matter to be mailed or sent has been inserted in the envelope.

The upper and lower and lateral margins of this modified form of envelope are reinforced by a light metal frame 8 conforming to ythe inner marginal contour of the envelope and provided with spaced apertures for receiving eyelets 9 or the like for securing the frame in the envelope. In this case the frame may readily be inserted through the mouth of the envelope and secured therein as just explained.

Itwill be'appreciated that an envelope having its margins reinforced by a metal or rigid strip produces sucient rigidity to insure proper protection for the inclosed matter both from buckling and the wear and tear at the lateral edges.

I am aware that numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do notJ purpose limiting the patent granted otherwise than necessitated by the prior art.

I claim as my invention:

l. An envelope, comprising one wall formed` of corrugated board, the other wall formed of flexible material [ixed to said oorrugated board so as to :tolcll over andenolose 'formed or" flexible material fixed to one margin of said hoard and folded over the opposite face thereof and over the opposite margin and terminating in a securing Hap,

said flexible material having laterally projeeted margins adapted to folcl inward to protect the lateral edges of the contained matter, and supplemental reenforeing` strips attaehedto the exterior of said board transverse of its oorrugations.

ntestimony whereof l have hereunto subscribed my name linthe presence of two subscribing witnesses.

PAUL F. MILNARST.

`Witnesses OSCAR HARTMANN, CARLTON HILL. 

